Tramcar narrow-gauge railway transport vehicle mines transport coal, ore and waste rock and other bulk materials, are generally required traction locomotive or winch. Determination of the wheel-rail gap: the assembled tub on the straight track inspection, three of the four wheels in contact with the track surface Chi, curved rail side dump mine car, the other wheel and rail surface allows a gap, Qinghai song rail side dump mine car, the gap with a feeler. Tramcar narrow-gauge railway transport vehicle mines transport coal, ore and waste rock and other bulk materials, curved rail side dump mine car manufacturers, are generally required traction locomotive or winch. Harvesters basic components: the trunk is loaded tub shaped box containing material. Fixed trunk tub wagons semicircular vehicle to use more, not only easy to process, but also help clean up the car at the end of mechanization adhesive material.